Defects and Damage in Composite Materials and Structures: 1st Edition (Paperback) book cover

Defects and Damage in Composite Materials and Structures

1st Edition

By Rikard Benton Heslehurst

CRC Press

214 pages | 154 B/W Illus.

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Description

The advantages of composite materials include a high specific strength and stiffness, formability, and a comparative resistance to fatigue cracking and corrosion. However, not forsaking these advantages, composite materials are prone to a wide range of defects and damage that can significantly reduce the residual strength and stiffness of a structure or result in unfavorable load paths.

Emphasizing defect identification and restitution, Defects and Damage in Composite Materials and Structures explains how defects and damage in composite materials and structures impact composite component performance. Providing ready access to an extensive, descriptive list of defects and damage types, this must-have reference:

  • Examines defect criticality in composite structures
  • Recommends repair actions to restore structural integrity
  • Discusses failure modes and mechanisms of composites due to defects
  • Reviews NDI processes for finding and identifying defects in composite materials

Relating defect detection methods to defect type, the author merges his experience in the field of in-service activities for composite airframe maintenance and repair with indispensable reports and articles on defects and damage in advanced composite materials from the last 50 years.

Reviews

"… easy to read and up to date, with good explanations and details on repairs."

—Brent Strong, Brigham Young University, Provo, Utah, USA

"… detailed coverage by a knowledgeable author."

—Michael J. Hoke, Abaris Training Resources, Inc., Reno, Nevada, USA

Table of Contents

Preliminary Pages

Introduction

Advanced Composite Materials

The Range of Composite Structural Types

Aerospace Applications

Civil Infrastructure Applications

Marine Applications

Land Transport Applications

Other Applications

Design Requirements with a Focus on the Damaging Environment

What the Book Contains

Definitions

Defects

Failure

Damage and Defect Description

Introduction

Defect Types

Description

Classifications of Defect Types

Defect Occurrence

Defect Size

Defect Location

Generalization of Defect Types

Conclusions

Appendix A - Defect Type Description

Finding the Non-Conformity

Introduction

NDI Methods

Visual Inspection

Acoustic Methods

Ultrasonic Methods

Thermography

Interferometry

Radiography

Microwave

Material Property Changes

In-Situ Methods

Application of NDI Methods

NDI Selection Process

NDI Personnel

Important Requirements

Failure Mechanisms

Introduction

Failure Modes and Mechanisms

Basic Modes of Failure

Complex Modes of Failure

Failure Mechanisms

Conclusions

Loss of Integrity

Introduction

Definitions

Generic Defect Types

Structurally Significance Defect

General Representation

Criticality of Defects

Matrix Cracks (Intralaminar)

Delaminations (Interlaminar Matrix Cracks)

Fiber Cuts And Holes

Summary

Restitution and Repair

Introduction

Selection of The Repair Method

Repair Facility Capability

Types of Damage

On- or Off-Structure

Damaged Component Accessibility

Repair Criteria

Generic Repair Designs

Filling/Sealing Repair Scheme

Filling/Doubler Patch Repair Scheme

Flush Bonded Patch Repair Scheme

Bolted Patch Repair Schemes

Matrix Cracks

Delaminations

Holes and Fiber Fracture

Low Strength Degrading Holes

Moderate Strength Degrading Holes

Fully Structural Repairs to Holes

Damage Removal and Surface Preparation

Removing the Damage

Moisture Removal

Surface Preparation

Repair Scheme Fabrication and Application

Cure Process

Post-Repair Inspection

Summary

References and Bibliography

List of Figures

List of Tables

Nomenclature

Preface

Dedication

Index

About the Author

Rikard Benton Heslehurst, Ph.D, CPEng, FIEAust, FRAeS, FSAMPE, SMAIAA, ACSS, SAE, EAA, Spitfire Assoc. is a former aeronautical engineering officer in the Royal Australian Air Force (RAAF). Currently, he is senior lecturer for the School of Engineering and Information Technology of the University College, UNSW at the Australian Defence Force Academy. He is also senior engineer for Abaris Training, Reno, Nevada and consultant for the Australian Defence Force, Civil Aviation Safety Authority, Raytheon Missile Systems, NASA, USAF, Boeing, Bombardier Aerospace, Australian Space Safety Office, SRAM-Zipp Wheels, and SP Systems-UK.

Subject Categories

BISAC Subject Codes/Headings:
TEC009070
TECHNOLOGY & ENGINEERING / Mechanical
TEC021000
TECHNOLOGY & ENGINEERING / Material Science